For the cylinders of shoddy and bag pickers



(No Mael.)

T. W. HARDING.

GOVERING PR THB GYLINDERS OP SHODDY AND RAG PIGKBRS.

No. 268,015. PatentedNov. 28, 1882.

FUQJ Fm@ Fmg@ Fm@ ff D UNITED STATES PATENT OFFICE.

AT. WALTER HARDING, OF LEEDS, ENGLAND.

COVERING FOR THE CYLINDERS OF SHODDY AND RAG PlCKERS.

SPECIFICATION forming part of Letters Patent No. 268,015, dated November 28, 1882.

Application filed October 16, 1882. (No model.) Fatentcd in England May 15, 1882, No. 2,252.

To alt whom it 'may concern Beit known thatI, THOMAS WALTER HARD- ING, a subject ot' the Queen of Great Britain and Ireland, and residing at Leeds, England, have invented a new and useful Covering for the Cylinders of Shoddy and Rag Pickers and other analogous machines, (for whichl applied for a patent in Great Britain, May l5, 1882, No. 2,252,) ot' which the following is a specitication.

My invention relates to the shape of the pins used and the mode of inserting them into the covering. Hitherto these coverings have been made of segments of wood or iron, in which rows of round holes have been suitably bored, into which steel pins or teeth are driven, so as to project an inch, or thereabout. These pins have usually been forged to a round section and tapered, the rootend being left square,

`so as to hold the pins more firmly in the segment and to prevent them iying out by centrifugalactionwhenworking. Thesepinshave also been made of round wire suitably tapered,

in which case they have usually been provided with nail-heads, or made double inthe form of a staple, as described in my patent of June 1, 1879, No. 217,100. In all these cases the pins have, so far as their working part is concerned, been of round section and been driven into round holes in the segments. They have been open to the disadvantage that, being tapered so as to secure strength, they Work well While they are new andthe small end or point ofthe pin is engaged, but less and less Well as they wear down and the thick or stump end of the y pin comes into play.

My invention consists in .making the holes in the segment of oval or attened section, so as to receive pins having flattened sides, which pins present a thinsurface to the work on their front edge, but have great strength in thedirection ot' the strain ot' the work.

In the drawings, Figure l shows a front view of a headed and iattened pin tapered slightly at the point. Fig. 2 shows a side view lit of the saine, wide at the base and the projecting portion tapering upward from the point c. Fig. 3 showsa front view of a similar pin made of flat wire, the point being slightly tapering. Fig. 4 is a side view of the same, the rear, c2, of the point having a sharp slant or taper. Fig. 5 shows a front view of a portion of the lagging or segment fitted with headed fiattened pins, and Fig. 6 is a side View of the same. Fig. 7 is a plan of a portion ofthe lagging, showing the shape ofthe holes into which the flattened pins are driven.

These pins are produced either from flat wire or sheet-steel cut with a beveled point; or preferably they are made` by attening tapered round wire pins between steeldies. They may either be itted with a nail or other head, or they may be used in a double or staple form. The elongated holes c2 in the lags or segments (see Fig. 7) are obtained by first drilling small holes of a diameter equal to the thin side of the pins, and then drifting or punching out these holes to required shape by means already known.

I find that coverings made on this plan perform their work as well when the pins are nearly worn down as when new; that they are much stronger than with pins of round section, and require less power to drivethem.

I do not limit myself to the exact section or degree of liattening shown or shape ofthe head.

I claim- 1. The combination, with the cylinder of a rag-picker or similar waste-tearing machine, of a covering, D, having projecting pins G, with iattened sides and a thin Working-edge, as herein described.

2. The combination, with the cylinder of a rag-picker or similar waste-tearing machine, of acoverin g with elongated holes C2 cut therein, through which project pins with dattened sides, as herein described.

T. WALTER- IIARDING.

A. B. CRANE, l. V. BoNNELL. 

